CVE-2026-103437
ReadingLists imported metadata permits JavaScript URL XSS
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki ReadingLists extension allows Reflected XSS.
This issue affects MediaWiki ReadingLists extension: 1.46 and 1.45.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Active
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
ReadingLists imported metadata permits JavaScript URL XSS
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki ReadingLists extension allows Reflected XSS.
This issue affects MediaWiki ReadingLists extension: 1.46 and 1.45.
- Record
CVE-2026-103437- CVSS 4.0
- 1.1 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber - Weakness
- CWE-80
- Updated
- 2026-11-02
EUVDEUVD-2026-90201
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki ReadingLists extension allows Reflected XSS.
This issue affects MediaWiki ReadingLists extension: 1.46 and 1.45.
- Record
EUVD-2026-90201- CVSS 4.0
- 1.1 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-c4w7-7m72-q5m9
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in...
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki ReadingLists extension allows Reflected XSS.
This issue affects MediaWiki ReadingLists extension: 1.46 and 1.45.
- Record
GHSA-c4w7-7m72-q5m9- CVSS 4.0
- 1.1 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber - Weakness
- CWE-80
- Updated
- 2026-11-02
NVD
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki ReadingLists extension allows Reflected XSS.
This issue affects MediaWiki ReadingLists extension: 1.46 and 1.45.
- Record
CVE-2026-103437- CVSS 4.0
- 1.1 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber - Weakness
- CWE-80
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | BomboBombone/CVE-2026-103437 | 2026-09-30 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-103437 is a low vulnerability (CVSS 1.1) in The Wikimedia Foundation Mediawiki Readinglists Extension, published September 30, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 24th percentile. No source names a fixed version.